Increasingly, this apparent diversity is becoming a mask for a new type of conformity.

这种明显的多样性正日益成为一种新型一致性的面具。

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You must wear goggles and a mask that will protect you against the fumes.

你必须带上护目镜和防护面具，以保护你不被烟熏。

《柯林斯英汉双解大词典》

You may look cooler with a mask on!

你戴上口罩可能看起来更酷！

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The old man wore thick gloves on his hands and a mask over his mouth and nose.

VOA: special.2009.05.23

If I'm wearing a mask as I do my terrible stuff, nobody will know it's me, but there's also a psychologically liberating effect.

如果我干坏事是戴上面具，就没人知道是我，除了这个原因，还有一种心理解脱效应。

耶鲁公开课 - 心理学导论课程节选

Now as I mentioned, the title of this piece was originally A Mask Presented at Ludlow Castle, and it seems actually to have been known by the reading public by this title for a good hundred years or so.

现在正如我提到的，这部作品的标题,最初是拉德洛城堡里上演的《面具》,它似乎已经在好几百年前,就因为这个标题被广大读者熟知了。

耶鲁公开课 - 弥尔顿课程节选

He was holding a knife in his hand and he was wearing a mask.

BBC: Elswick knifepoint rapist Abdul Miah jailed for 12 years

The medical team started Sara on intravenous antibiotics and high-flow oxygen through a mask.

NEWYORKER: Letting Go

To counter this, he sports a mask used by motocross riders in muddy conditions.

CNN: Cool racing: Horses battle on snow